Bullet and projectile.



E. SPENCER. l BULLET AND PROJEGTILB. A PPLIOATION F`IV-LBD SEPT-5 1908 y 9222638.' Patented May 2 5, 1909.

to give these a very high velocity,

- of a bullet in which my second improvement j EDWARD SPENCR, OFv WEST BRUN SWICK, VICTORIA, AUSTRALIA.

BULLET AND PROJECTILE.

To all whom it may concern:

Be it known that' EDWARD Walton House, Brunswick Road, YWest Brunswick, in the State of Victoria, Commonwealth of Australia, a subject of the King of Great Britain, has invented certain new and useful Im rovements in Bullets and Frojectiles, of W ich the following is a specification. I

As is well known, manyattempts have hitherto Vbeen made to im rove the form or construction of bullets and projectiles so as to impart to them a rapid rotation by atmospheric action Vaiter their discharge from smooth bore lire-arms or guns. l

The improvements which I havev devised will serve to attain the desired end and alsoV to give Yim roved eiiects as hereinafter explained. or instance, according to my irst improvement I make air holes of a particular character that curve diagonally through elongated bullets or projectiles so as speed of revolution on the axis by atmospheric action, a steadiness in iight, and a very fiat trajectory when fired from smooth bore iirearms or guns.

The invention will be better understood upon reference to the accompanying sheet of drawings in which- Figure l re resents an elevation of an elongated bul et having the diagonally curved airV holes shown by dotted lines. Fig. 2 is a plan of the rear end of Fig. 1. Fi 3 is a section along one of the said air hotles through a bullet, illustrated for the purpose of showing that the two diagonally curved holes are separate one from theother and also that where they pass each other at or about the midlength portion of the bullet there is a thin solid partition of metal between them. Fig. 4 is a sectional elevation SPENCER, of

is shown. Figs. 5 and 6 represent a partial elevation and plan respectively of a `percussion )rojectile or shell for guns of large caliber sliowing three air holes made throughout its length instead of diagonally curved holes as hereinbefore mentioned, Y

My i'irst improvement as shown in Figs. l and 2 consists in making air holes (A) and (B) each to commence near the point (C) of the conoidal or front end of the bullet. These holes are situate diametrically oppo- Speccation of Letters Patent. Application led September 5, 1908.

Yof the diameter of said site each other on the front and rear ends, and the hole (A) passes from right to left,

Patented May 25, 1909. Serial N0. 451,881.

While the other hole (B) passes from left to right, both terminating and opening out into the rear end of the bullet. Said holes have anheven curve throughout so as to clear each ot the bullet, and each one has a half turn from right to left in the length of bullet, and in cross section the area of each is one quarter bullet.

Y My second improvementshown at Fig. 4 will also serve for rotating the bullet on its axis. In this case there is one hole (D) commencing at the point (E) and terminat` ing at the rear end. This hole (D) which is made of a size equal to one quarter of the cross section area of the bullet is spirally diverted to the right and left of the axis of'said buclllet and terminates at the center of its rear en Y It may be here explained that all the holes made through the bullets or projectiles are comparatively speaking of a large cross area, but this peculiarity is necessary for the reason that there will be an improved atmospheric action within the air holes, and also a better back pressure instead of suction at the rear end of the bullet or projectile in its Hight. So important is this innovation with respect to bullets for small caliber fire-arms that I have designed my third improvement soas to obtain the same eects sion or time fuse shells. This third improvement as shown at Figs. 5 and 6 consists in making three air holes (F) (G) and (H) through the body of the shell. These holes are equidistant from one another and extend from the front or conoidal portion (I) to the rear end of the shell, being made near its exterior. Each hole (F), (G) and (H) lies at an angle parallel with the axis of projectile while the rear end of hole is out of line with the iront end to the extent of three eighths of the diameter of said shell as shown by dotted lines (O) and (P) representing the sides of hole (F). rlhe diametral Width of each hole (F), (G) and (H) will be one quarter of the diameter of the shell. In this view (J) represents the shell, (K) the percussion cap, (L) the nipple for same, (M) flash vent, (N) the ammunition chamber. The holes made in the bullet or in the projectile may be either angular, circular, or semicircular in shape and the bullets may be made of iron, steel, lead or of any other suit able metal.

Having now fully described my invention,

er at the center or midlength portion of with .percuswhat claim as new and desire te secure by i In testimonyY whomef I have hereunto .set Letters Patent 1s: my hand 1n presence ei two snbsel'lblng wit A bullet havnw un an' hele thereln com nesses.

meneing at the iront end 01 oint of the EDWARD SPENCER. ,5 bullet and turning splally to t le right and Witnesses:

left, then termmating centrally at the rem' ALBERT E. SWANsON,

end of said bullet, substantially as set forth. FLORENCE SWANSON. 

